ASTROSAT CZTI

Data Quality Report

Orbit 53457

Creation date: 2025-10-15T21:46:44.567229
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_002T06_9000006496_53457cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53457cztM0_level2_quad_clean.evt
Size (bytes)835,770,24079,482,240
Size797.1 MB 75.8 MB
Events in quadrant A4,985,806625,549
Events in quadrant B3,850,546726,223
Events in quadrant C17,572,10115,669
Events in quadrant D4,019,656581,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193123
B0159652
C0565492
D0166092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A656267910.347455%
B65622193.337397%
C6562642097.836026%
D65622473.764096%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7672 6563 438 438 5.71% 6.67%
B 7672 6563 34 34 0.44% 0.52%
C 7671 6561 6273 6273 81.78% 95.61%
D 7672 6563 125 125 1.63% 1.90%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1329644 7460.36 721 702 178.1
A 3 63 675467 3787.97 721 702 178.1
A 7 30 72139 401.03 721 702 178.1
B 4 171 667751 4181.29 743 720 159.5
B 8 234 79169 491.76 743 720 159.5
B 0 213 50560 312.42 743 720 159.5
C 1 241 12729498 246381.25 186 185 51.7
C 15 178 2678861 51846.91 186 185 51.7
C 15 224 1079367 20888.03 186 185 51.7
D 3 12 293433 1443.34 721 687 202.8
D 7 70 191473 940.64 721 687 202.8
D 3 224 184957 908.51 721 687 202.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter